Ignition Coil and Iridium Spark Plugs for Cadillac CT6 (2016-2019) 2.0L

Direct-Replacement Ignition Kit for 2016-2019 Cadillac CT6

Primary Function: Restores high-voltage secondary ignition output and precise flame-front propagation for the 2.0L Turbo direct-injected engine.

The Stock CT6 Ignition Thermal Breakdown

The forced-induction LTG engine operates under high cylinder pressures and elevated under-hood temperatures. Over time, OEM coil packs suffer from dielectric breakdown, thermal cycling fatigue, and cracked internal epoxy insulation. This causes high-voltage micro-arcing and secondary resistance drift. Combined with premature electrode wear on factory plugs, this degradation leads to high-boost spark blowout, rough idle, hesitation, and stored P0300 misfire codes.

The Engineering Solution

This comprehensive service kit pairs four heavy-duty coil-on-plug assemblies with fine-wire iridium spark plugs. Each ignition coil features high-purity copper windings, specialized high-dielectric potting compound, and thermal-resistant boots to prevent voltage leakage under high-load boost conditions. The paired iridium plugs deliver high thermal stability, precise spark gap retention, and low voltage demand to ensure stable combustion efficiency and crisp throttle response.

Technical Specifications

Compatibility

• 2016-2019 Cadillac CT6 Base 2.0L L4 Turbo (Gas)
• 2016-2019 Cadillac CT6 Luxury 2.0L L4 Turbo (Gas)
• 2016-2018 Cadillac CT6 Premium Luxury 2.0L L4 Turbo (Gas)

The Cadillac Luxury Standard

Engineered to meet stringent GM electronic tolerances, this direct-fit ignition kit ensures zero CEL interference, smooth idle harmonics, and reliable cold starts across all luxury driving conditions.